Multiple Appearance Directory Number feature description

Last Updated : May 23, 2019 |
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In the most accurate sense, Multiple Appearance Directory Number (MADN) applies both to a Single Call Arrangement and to a Multiple Call Arrangement, when at least two buttons for the number exist in the network.
The following are all MADN:
  • One user with two or more call appearance buttons on his or her station.
  • At least two users with a single line appearance button for a specific call appearance. There is a call appearance button positioned either on one of the two endpoints or on a virtual set, depending on the specific desire behavior.
  • A mix of users have two or more buttons while other users have a single button for line appearances.
MADN has two variants:
  • Only one call can exist at a time on any of the stations. For example, if User 1 has a call on a line appearance for 235-5801, other users cannot create a new call. This is “Single Call Arrangement”.
  • Every line appearance button can have its own call. This is “Multiple Call Arrangement”.
With MADN, a Single Call Arrangement (SCA) may be private or non-private; that is, the call may or may not use exclusion.
  • If exclusion is enabled, no other user may use the extension until the user releases the call or puts the call on hold with non-exclusive call retrieval. If Alice had an exclusive call and put it on hold, Bob could pick the call up and have exclusive “ownership” of the call.
  • If exclusion is disabled or not configured, other users may “conference into the call”, using the line button.
  • The lamp state indicates either idle, “available” (flashing), or “in exclusive use by someone else” (lit).
  • SCA is not recommended for analog stations, as they are unable to use any other appearances to place calls while the SCA number is active.
  • The 1210 UNIStim phones cannot bridge a call. Hence, Avaya recommends that you do not configure SCA on 1210 UNIStim phones. If SCA is configured on a 1210 UNIStim phone and if the SCA number is active, the user cannot use any other appearances on the 1210 phone to place a call or join another call. This limitation of the 1210 UNIStim phone is the same in both CS 1000 and Communication Manager.
A Multiple Call Arrangement (MCA) call is significantly different.
  • If there are 30 users, there may be at least 30 calls in progress at one time.
  • If a user has 10 appearances, the user may have up to one call in progress (ringing, being placed, or active) and all other appearances may be on hold.
  • No user may bridge into the appearance being used by another user.
  • The lamp state for the button is for the current call only; if a call is ringing, any user with an idle button can answer it (flashing). However, buttons already in use indicate that they are in use (lit), and as soon as the call is answered or released, all parties not already in a call have the button go dark, available for the next call.
The Device Adapter provides both user experiences, depending on how the button is configured.
If configured for SCA:
  • If one user has a single call appearance button and all others have a bridged appearance button for this appearance, no more than one incoming call is allowed, and only the user on the call can access the “outbound” appearance for call transfer and conference associated with the transfer or conference key.
  • The setting of the exclusion determines whether others can bridge in.
  • A privacy button is available to toggle from not private to private. This is the reverse of the logic on the CS 1000, where the toggle is from private to not-private, but otherwise the behavior is identical.
  • Both incoming and outgoing calls can consume the single call appearance available for calls. However, transfer and conference is still available.
If configured for MCA:
  • Typically, an X-Port (virtual station) is defined with sufficient call appearances to allow all users to have a single call for this extension.
  • The stations are defined with a specialized Bridged Appearance, which has the “a” (any) parameter. This matches the MADN approach:
    • For an incoming call, all idle MCA buttons indicate the incoming call.
    • When the call is answered, only the party answering is on the call. All other fringing buttons go idle.
    • If a user uses the button to call out, the caller information for the call is that of the MCA extension.
    • Outgoing calls are not visible to any other users.
    • Each user can transfer or conference the call but cannot do this to the extension in use.
  • All calls are private. The user must add anyone (conference or transfer).
For more information, refer Per Button Ring Control section, where the call appearance variants SCA and MCA split into ringing (SCR and MCR) and non-ringing (SCN and MCN).